Variables | Mean | St. dev | Min | Max | (1) | (2) | (3) |
---|---|---|---|---|---|---|---|
(1) Semester GPA | 3.24 | 0.52 | 1.46 | 4.00 | 1 | ||
(2) Daily average minutes spent on social networking sites | 86.28 | 64.60 | 5.61 | 280.50 | − 0.457*** | 1 | |
(3) Daily average minutes spent on social networking sites squared | 11,512.73 | 17,461.01 | 31.53 | 78,680.25 | − 0.554*** | 0.949*** | 1 |
(4) Daily average minutes spent on smartphone | 257.45 | 111.635 | 26.97 | 479.39 | − 0.188n.s | 0.632*** | 0.588*** |